Tunneling-induced π-phase shift of a quantum-dot molecule coupled to a single-sided cavity J.H. Li, R. Yu, C.L. Ding and X.X. Yang Eur. Phys. J. D, 62 3 (2011) 425-431 Published online: 25 March 2011 DOI: 10.1140/epjd/e2011-10649-7